CN111446047A - Electromagnetic wire baking process - Google Patents
Electromagnetic wire baking process Download PDFInfo
- Publication number
- CN111446047A CN111446047A CN202010266328.3A CN202010266328A CN111446047A CN 111446047 A CN111446047 A CN 111446047A CN 202010266328 A CN202010266328 A CN 202010266328A CN 111446047 A CN111446047 A CN 111446047A
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- temperature
- baking furnace
- baking
- furnace
- controlled
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/065—Insulating conductors with lacquers or enamels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
The invention discloses an electromagnetic wire baking process, wherein a conductor coated with insulating paint enters a baking furnace from an inlet of the baking furnace during baking, the temperature of the inlet of the baking furnace is controlled within a first set range, the central temperature of the baking furnace is controlled within a second set range, the outlet temperature of the baking furnace is controlled within a third set range, and the temperature of the baking furnace before catalysis is controlled within a fourth set range; the inlet temperature of the baking furnace, the central temperature of the baking furnace, the outlet temperature of the baking furnace and the temperature of the baking furnace before catalysis are controlled by an intelligent temperature control system. According to the electromagnetic wire baking process, the baking furnace adopts the intelligent temperature control system, four-point temperature control is realized in the baking furnace, the baking temperature of a plurality of furnace areas is controlled on line, data is provided for preventing and eliminating fault abnormality, the adhesive force and flexibility of the electromagnetic wire insulating paint are improved, the product quality of the electromagnetic wire for the driving motor can be improved, and the curing degree uniformity of different types of insulating paint films can be ensured.
Description
Technical Field
The invention belongs to the technical field of electromagnetic wire processing technologies, and particularly relates to an electromagnetic wire baking technology.
Background
At present, new energy automobiles are vigorously developed in all countries in the world, China is particularly listed into seven war-related emerging industries, and the development of energy-saving and new energy automobiles is one of the important measures for reducing the oil consumption and the carbon dioxide emission in China. The hub driving motor is one of key technologies for realizing the development and popularization of new energy automobiles, and has the characteristics of enabling an automobile mechanism to be simpler, realizing various complex driving modes and matching various new energy automobile types. The driving motor is used as a core component of the new energy automobile and has the characteristics of large torque and large power density.
The electromagnetic wire used on the driving motor is an enameled wire, the electromagnetic wire for the driving motor is usually manufactured through the steps of wire drawing, water washing, annealing, dipping, baking, wire winding and the like, the flexibility of the electromagnetic wire is influenced by the curing degree of a paint film, and if the paint film is cured excessively, the rigidity of the paint film is high. The baking process is a key process of the whole processing technology, and the thermal property, the chemical property and the insulating property of the electromagnetic wire are directly influenced. The existing baking process is easy to cause poor paint film adhesion of the electromagnetic wire, and further causes the problems of paint film cracking and falling off and the like of the electromagnetic wire in the winding and using processes, and the product quality is poor.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a magnet wire baking process, and aims to improve the product quality of the magnet wire for the driving motor.
In order to achieve the purpose, the invention adopts the technical scheme that: an electromagnetic wire baking process, wherein a conductor coated with insulating paint enters a baking furnace from an inlet of the baking furnace during baking, the inlet temperature of the baking furnace is controlled within a first set range, the central temperature of the baking furnace is controlled within a second set range, the outlet temperature of the baking furnace is controlled within a third set range, and the temperature of the baking furnace before catalysis is controlled within a fourth set range; the inlet temperature of the baking furnace, the central temperature of the baking furnace, the outlet temperature of the baking furnace and the temperature of the baking furnace before catalysis are controlled by an intelligent temperature control system.
The intelligent temperature control system comprises a first temperature sensor for detecting the inlet temperature of the baking furnace, a second temperature sensor for detecting the central temperature of the baking furnace, a third temperature sensor for detecting the outlet temperature of the baking furnace and a fourth temperature sensor for detecting the pre-catalysis temperature of the baking furnace; the first temperature sensors are three and are distributed at different positions of the inlet of the baking furnace; the second temperature sensors are three and are distributed at different positions in the center of the baking furnace; the three third temperature sensors are arranged at different positions of the outlet of the baking furnace; the fourth temperature sensors are three and three are distributed at different positions of the primary catalytic forehearth zone of the baking furnace.
The three first temperature sensors are uniformly distributed at the inlet of the baking furnace along the circumferential direction.
The three second temperature sensors are uniformly distributed along the circumferential direction at the center of the baking furnace.
The three third temperature sensors are uniformly distributed at the outlet of the baking furnace along the circumferential direction.
The three fourth temperature sensors are uniformly distributed in the primary catalytic forehearth area of the baking furnace along the circumferential direction.
According to the electromagnetic wire baking process, the baking furnace adopts the intelligent temperature control system, four-point temperature control is realized in the baking furnace, the baking temperature of a plurality of furnace areas is controlled on line, data is provided for preventing and eliminating fault abnormality, the adhesive force and flexibility of the electromagnetic wire insulating paint are improved, the product quality of the electromagnetic wire for the driving motor can be improved, and the curing degree uniformity of different types of insulating paint films can be ensured.
Detailed Description
The following examples are included to provide further detailed description of the embodiments of the invention and to provide those skilled in the art with a more complete, concise and complete understanding of the principles and spirit of the invention, and to facilitate its practice.
It should be noted that, in the following embodiments, the terms "first", "second" and "third" do not denote absolute differences in structure and/or function, nor do they denote a sequential order of execution, but rather are used for convenience of description.
The invention provides an electromagnetic wire baking process, wherein a conductor coated with insulating paint enters a baking furnace from an inlet of the baking furnace during baking, the inlet temperature of the baking furnace is controlled within a first set range, the central temperature of the baking furnace is controlled within a second set range, the outlet temperature of the baking furnace is controlled within a third set range, and the temperature of the baking furnace before catalysis is controlled within a fourth set range; the inlet temperature of the baking furnace, the central temperature of the baking furnace, the outlet temperature of the baking furnace and the temperature of the baking furnace before catalysis are controlled by an intelligent temperature control system.
Specifically, when baking, the conductor coated with the insulating paint enters the baking furnace from the inlet of the baking furnace, then enters the center of the baking furnace, and finally is pulled out from the outlet of the baking furnace, and the insulating paint is cured to form an insulating layer. The temperature at the inlet of the baking furnace is generally set in the range of 165 ℃ to 170 ℃, i.e., the first set range is 165 ℃ to 170 ℃. The center of the baking furnace means the center of the moving path of the conductor, and the temperature at the center of the baking furnace is generally set in the range of 270 to 280 c, that is, the second set range is 270 to 280 c. The temperature at the outlet of the baking furnace is generally set in the range of 370 ℃ to 380 ℃, i.e., the third set range is 370 ℃ to 380 ℃. The temperature before the catalysis of the baking furnace is generally set within the range of 475-485 ℃, namely, the fourth set range is 475-485 ℃.
The temperature acquisition system comprises a control unit, a first temperature sensor for detecting the inlet temperature of the baking furnace, a second temperature sensor for detecting the central temperature of the baking furnace, a third temperature sensor for detecting the outlet temperature of the baking furnace and a fourth temperature sensor for detecting the pre-catalysis temperature of the baking furnace; the first temperature sensors are three and are distributed at different positions of the inlet of the baking furnace; the second temperature sensors are three and are distributed at different positions in the center of the baking furnace; the three third temperature sensors are arranged at different positions of the outlet of the baking furnace; the fourth temperature sensors are three and three are distributed at different positions of the primary catalytic forehearth zone of the baking furnace. The first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor are electrically connected with the control unit, and the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor transmit detected data to the control unit.
Preferably, the three first temperature sensors are uniformly distributed at the inlet of the baking furnace along the circumferential direction, that is, the temperature at the inlet of the baking furnace is controlled by adopting a three-point temperature measurement mode. The arrangement of the first temperature sensors forms three-point method temperature measurement, the temperature data measured by the three first temperature sensors are intelligently compared by the control unit, if the temperature data measured by the three first temperature sensors are basically consistent, the sampling is reasonable, the average value of the temperature data is taken as the real-time temperature of the inlet of the baking furnace, otherwise, two close numerical values are taken as the real-time temperatures, whether the real-time temperatures are within a first set range or not is judged, the real-time temperatures at the inlet of the baking furnace are lower than the first set range, the control unit controls the heating device to heat the inlet of the baking furnace, the temperature of the inlet of the baking furnace is improved, and the temperature of the inlet of the baking furnace is ensured to be within the first set range. Three-point temperature measurement is adopted, so that if one of the first temperature sensors fails or interference occurs in the environment, correct adjustment of the control unit is not influenced, the temperature control precision is ensured, and the improvement of the product quality is facilitated.
Preferably, the three second temperature sensors are uniformly distributed in the center of the baking furnace along the circumferential direction, that is, the temperature in the center of the baking furnace is controlled by adopting a three-point temperature measurement mode. The arrangement of the second temperature sensors forms three-point method temperature measurement, the control unit intelligently compares temperature data measured by the three second temperature sensors, if the temperature data measured by the three second temperature sensors are basically consistent, the sampling is reasonable, the average value of the temperature data is taken as the real-time temperature of the center of the baking furnace, otherwise, two close numerical values are taken as the real-time temperatures, whether the real-time temperatures are within a second set range or not is judged, and the real-time temperature of the center of the baking furnace is lower than the second set range, the control unit controls the heating device to heat the center of the baking furnace, so that the temperature of the center of the baking furnace is increased, and the temperature of the center of the baking furnace is ensured to be within the second set range. Three-point temperature measurement is adopted, so that if one of the second temperature sensors fails or interference occurs in the environment, correct adjustment of the control unit is not influenced, the temperature control precision is ensured, and the improvement of the product quality is facilitated.
Preferably, the three third temperature sensors are uniformly distributed at the outlet of the baking furnace along the circumferential direction, that is, the temperature at the outlet of the baking furnace is controlled by adopting a three-point temperature measurement mode. The arrangement of the third temperature sensors forms three-point method temperature measurement, the control unit intelligently compares temperature data measured by the three third temperature sensors, if the temperature data measured by the three third temperature sensors are basically consistent, the sampling is reasonable, the average value of the temperature data is taken as the real-time temperature of the outlet of the baking furnace, otherwise, two close numerical values are taken as the real-time temperatures, whether the real-time temperatures are within a third set range or not is judged, and the real-time temperatures at the outlet of the baking furnace are lower than the third set range, the control unit controls the heating device to heat the outlet of the baking furnace, so that the temperature of the outlet of the baking furnace is improved, and the temperature of the outlet of the baking furnace is ensured to be within the third set range. Three-point temperature measurement is adopted, so that if one of the third temperature sensors fails or interference occurs in the environment, correct adjustment of the control unit is not influenced, the temperature control precision is ensured, and the improvement of the product quality is facilitated.
Preferably, the three fourth temperature sensors are uniformly distributed in the primary catalytic front furnace area of the baking furnace along the circumferential direction, that is, the temperature of the primary catalytic front furnace area of the baking furnace is controlled by adopting a three-point temperature measurement mode. The arrangement of the fourth temperature sensors forms three-point method temperature measurement, the temperature data measured by the three fourth temperature sensors are intelligently compared by the control unit, if the temperature data measured by the three fourth temperature sensors are basically consistent, the sampling is reasonable, the average value of the temperature data is taken as the real-time temperature of the primary catalytic front furnace area of the baking furnace, otherwise, two close numerical values are taken as the real-time temperatures, whether the real-time temperatures are within a fourth set range or not is judged, and the real-time temperature of the primary catalytic front furnace area of the baking furnace is lower than the fourth set range, the control unit controls the heating device to heat the primary catalytic front furnace area of the baking furnace, so that the temperature of the primary catalytic front furnace area of the baking furnace is improved, and the temperature of the primary catalytic front furnace area of the baking furnace is ensured to be within the fourth set range. Three-point temperature measurement is adopted, so that if one of the fourth temperature sensors fails or interference occurs in the environment, correct adjustment of the control unit is not influenced, temperature control precision is ensured, and improvement of product quality is facilitated.
According to the electromagnetic wire baking process, the intelligent temperature control system is adopted, the four-point temperature control and three-point temperature measurement are carried out on the baking furnace, the furnace temperatures of the inlet, the center, the outlet and the four points before catalysis are respectively controlled, the baking temperatures of a plurality of furnace areas are controlled on line, data are provided for preventing and eliminating fault abnormity, the uniformity of the curing degree of different insulating paint films is ensured, and the adhesive force and the flexibility of the electromagnetic wire insulating paint are improved.
The present invention has been described above by way of example. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (6)
1. An electromagnetic wire baking process is characterized in that a conductor coated with insulating paint enters a baking furnace from an inlet of the baking furnace during baking, the temperature of the inlet of the baking furnace is controlled within a first set range, the central temperature of the baking furnace is controlled within a second set range, the outlet temperature of the baking furnace is controlled within a third set range, and the temperature of the baking furnace before catalysis is controlled within a fourth set range; the inlet temperature of the baking furnace, the central temperature of the baking furnace, the outlet temperature of the baking furnace and the temperature of the baking furnace before catalysis are controlled by an intelligent temperature control system.
2. The magnet wire baking process of claim 1, wherein the intelligent temperature control system comprises a first temperature sensor for detecting the inlet temperature of the baking furnace, a second temperature sensor for detecting the center temperature of the baking furnace, a third temperature sensor for detecting the outlet temperature of the baking furnace, and a fourth temperature sensor for detecting the pre-catalytic temperature of the baking furnace; the first temperature sensors are three and are distributed at different positions of the inlet of the baking furnace; the second temperature sensors are three and are distributed at different positions in the center of the baking furnace; the three third temperature sensors are arranged at different positions of the outlet of the baking furnace; the fourth temperature sensors are three and three are distributed at different positions of the primary catalytic forehearth zone of the baking furnace.
3. The magnet wire baking process of claim 2, wherein the three first temperature sensors are circumferentially evenly distributed at the entrance of the baking furnace.
4. The magnet wire baking process according to claim 2 or 3, wherein the three second temperature sensors are circumferentially evenly distributed at the center of the baking furnace.
5. The magnet wire baking process according to any of claims 2 to 4, wherein the three third temperature sensors are circumferentially evenly distributed at the outlet of the baking furnace.
6. The magnet wire baking process of any of claims 2 to 5, wherein the three fourth temperature sensors are circumferentially uniformly distributed in the primary catalytic forehearth region of the baking furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010266328.3A CN111446047A (en) | 2020-04-07 | 2020-04-07 | Electromagnetic wire baking process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010266328.3A CN111446047A (en) | 2020-04-07 | 2020-04-07 | Electromagnetic wire baking process |
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| Publication Number | Publication Date |
|---|---|
| CN111446047A true CN111446047A (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010266328.3A Pending CN111446047A (en) | 2020-04-07 | 2020-04-07 | Electromagnetic wire baking process |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3683154A (en) * | 1970-11-16 | 1972-08-08 | Dorothy M Kapperman | Temperature control device |
| JPS5628672A (en) * | 1979-08-17 | 1981-03-20 | Shinetsu Densen Kk | Baking furnace provided with catalyst layer installed along runway of enameled wire |
| CN201163140Y (en) * | 2007-12-07 | 2008-12-10 | 周开勇 | Two-dimension temperature controlling oven |
| CN102543321A (en) * | 2011-11-14 | 2012-07-04 | 周开勇 | Energy conservation and environmental protection vertical enamel-cover oven and control method thereof |
| CN102945698A (en) * | 2012-10-09 | 2013-02-27 | 无锡统力电工有限公司 | Rectangular winding wire for new energy electric automobile motor and manufacturing method thereof |
| CN107680719A (en) * | 2017-10-30 | 2018-02-09 | 无锡统力电工股份有限公司 | High heat-resisting corona enamel-cover rectangular winding wire and preparation method thereof |
| CN109065260A (en) * | 2018-07-25 | 2018-12-21 | 瑞安市中德电工器材有限公司 | A kind of enameled wire and its production technology |
-
2020
- 2020-04-07 CN CN202010266328.3A patent/CN111446047A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3683154A (en) * | 1970-11-16 | 1972-08-08 | Dorothy M Kapperman | Temperature control device |
| JPS5628672A (en) * | 1979-08-17 | 1981-03-20 | Shinetsu Densen Kk | Baking furnace provided with catalyst layer installed along runway of enameled wire |
| CN201163140Y (en) * | 2007-12-07 | 2008-12-10 | 周开勇 | Two-dimension temperature controlling oven |
| CN102543321A (en) * | 2011-11-14 | 2012-07-04 | 周开勇 | Energy conservation and environmental protection vertical enamel-cover oven and control method thereof |
| CN102945698A (en) * | 2012-10-09 | 2013-02-27 | 无锡统力电工有限公司 | Rectangular winding wire for new energy electric automobile motor and manufacturing method thereof |
| CN107680719A (en) * | 2017-10-30 | 2018-02-09 | 无锡统力电工股份有限公司 | High heat-resisting corona enamel-cover rectangular winding wire and preparation method thereof |
| CN109065260A (en) * | 2018-07-25 | 2018-12-21 | 瑞安市中德电工器材有限公司 | A kind of enameled wire and its production technology |
Non-Patent Citations (1)
| Title |
|---|
| 赵仕俊: "《机械制造工程技术基础》", 31 August 2007 * |
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Application publication date: 20200724 |